po-faced /ˌpəʊ ˈfeɪst◂ $ ˌpoʊ-/
adjective British English informal[
Date: 1900-2000;
Origin: Perhaps from po 'chamber pot' (19-20 centuries), from French pot, influenced by poker-faced]
having an unfriendly disapproving expression on your face
Synonym : stern [TahlilGaran] Dictionary of Contemporary English ▲